diff --git a/src/include/ngspice/devdefs.h b/src/include/ngspice/devdefs.h
index b4be7a2b6..49704ab07 100644
--- a/src/include/ngspice/devdefs.h
+++ b/src/include/ngspice/devdefs.h
@@ -21,7 +21,7 @@ void DEVcmeyer(double,double,double,double,double,double,double,double,double,
 void DEVqmeyer(double,double,double,double,double,double*,double*,double*,
         double,double);
 void DevCapVDMOS(double, double, double, double, double,
-                 double*, double*, double*);
+                 double*, double*);
 double DEVpred(CKTcircuit*,int);
 
 /* Cider integration */